text: #!/usr/bin/env python3
  
  import argparse
  import os
  import subprocess
  import sys
  
  def setup():
      global args, workdir
      programs = ['ruby', 'git', 'apt-cacher-ng', 'make', 'wget']
      if args.kvm:
          programs += ['python-vm-builder', 'qemu-kvm', 'qemu-utils']
      elif args.docker:
          dockers = ['docker.io', 'docker-ce']
          for i in dockers:
              return_code = subprocess.call(['sudo', 'apt-get', 'install', '-qq', i])
              if return_code == 0:
                  break
          if return_code != 0:
              print('Cannot find any way to install docker', file=sys.stderr)
              exit(1)
      else:
          programs += ['lxc', 'debootstrap']
      subprocess.check_call(['sudo', 'apt-get', 'install', '-qq'] + programs)
      if not os.path.isdir('gitian.sigs.drc'):
          subprocess.check_call(['git', 'clone', 'https://github.com/doraecoin-project/gitian.sigs.drc.git'])
      if not os.path.isdir('doraecoin-detached-sigs'):
          subprocess.check_call(['git', 'clone', 'https://github.com/doraecoin-project/doraecoin-detached-sigs.git'])
      if not os.path.isdir('gitian-builder'):
          subprocess.check_call(['git', 'clone', 'https://github.com/devrandom/gitian-builder.git'])
      if not os.path.isdir('doraecoin'):
          subprocess.check_call(['git', 'clone', 'https://github.com/doraecoin-project/doraecoin.git'])
      os.chdir('gitian-builder')
      make_image_prog = ['bin/make-base-vm', '--suite', 'bionic', '--arch', 'amd64']
      if args.docker:
          make_image_prog += ['--docker']
      elif not args.kvm:
          make_image_prog += ['--lxc']
      subprocess.check_call(make_image_prog)
      os.chdir(workdir)
      if args.is_bionic and not args.kvm and not args.docker:
          subprocess.check_call(['sudo', 'sed', '-i', 's/lxcbr0/br0/', '/etc/default/lxc-net'])
          print('Reboot is required')
          exit(0)
  
  def build():
      global args, workdir
  
      os.makedirs('doraecoin-binaries/' + args.version, exist_ok=True)
      print('\nBuilding Dependencies\n')
      os.chdir('gitian-builder')
      os.makedirs('inputs', exist_ok=True)
  
      subprocess.check_call(['wget', '-N', '-P', 'inputs', 'http://downloads.sourceforge.net/project/osslsigncode/osslsigncode/osslsigncode-1.7.1.tar.gz'])
      subprocess.check_call(['wget', '-N', '-P', 'inputs', 'https://bitcoincore.org/cfields/osslsigncode-Backports-to-1.7.1.patch'])
      subprocess.check_call(['make', '-C', '../doraecoin/depends', 'download', 'SOURCES_PATH=' + os.getcwd() + '/cache/common'])
  
      if args.linux:
          print('\nCompiling ' + args.version + ' Linux')
          subprocess.check_call(['bin/gbuild', '-j', args.jobs, '-m', args.memory, '--commit', 'doraecoin='+args.commit, '--url', 'doraecoin='+args.url, '../doraecoin/contrib/gitian-descriptors/gitian-linux.yml'])
          subprocess.check_call(['bin/gsign', '-p', args.sign_prog, '--signer', args.signer, '--release', args.version+'-linux', '--destination', '../gitian.sigs.drc/', '../doraecoin/contrib/gitian-descriptors/gitian-linux.yml'])
          subprocess.check_call('mv build/out/doraecoin-*.tar.gz build/out/src/doraecoin-*.tar.gz ../doraecoin-binaries/'+args.version, shell=True)
  
      if args.windows:
          print('\nCompiling ' + args.version + ' Windows')
          subprocess.check_call(['bin/gbuild', '-j', args.jobs, '-m', args.memory, '--commit', 'doraecoin='+args.commit, '--url', 'doraecoin='+args.url, '../doraecoin/contrib/gitian-descriptors/gitian-win.yml'])
          subprocess.check_call(['bin/gsign', '-p', args.sign_prog, '--signer', args.signer, '--release', args.version+'-win-unsigned', '--destination', '../gitian.sigs.drc/', '../doraecoin/contrib/gitian-descriptors/gitian-win.yml'])
          subprocess.check_call('mv build/out/doraecoin-*-win-unsigned.tar.gz inputs/doraecoin-win-unsigned.tar.gz', shell=True)
          subprocess.check_call('mv build/out/doraecoin-*.zip build/out/doraecoin-*.exe ../doraecoin-binaries/'+args.version, shell=True)
  
      if args.macos:
          print('\nCompiling ' + args.version + ' MacOS')
          subprocess.check_call(['bin/gbuild', '-j', args.jobs, '-m', args.memory, '--commit', 'doraecoin='+args.commit, '--url', 'doraecoin='+args.url, '../doraecoin/contrib/gitian-descriptors/gitian-osx.yml'])
          subprocess.check_call(['bin/gsign', '-p', args.sign_prog, '--signer', args.signer, '--release', args.version+'-osx-unsigned', '--destination', '../gitian.sigs.drc/', '../doraecoin/contrib/gitian-descriptors/gitian-osx.yml'])
          subprocess.check_call('mv build/out/doraecoin-*-osx-unsigned.tar.gz inputs/doraecoin-osx-unsigned.tar.gz', shell=True)
          subprocess.check_call('mv build/out/doraecoin-*.tar.gz build/out/doraecoin-*.dmg ../doraecoin-binaries/'+args.version, shell=True)
  
      os.chdir(workdir)
  
      if args.commit_files:
          print('\nCommitting '+args.version+' Unsigned Sigs\n')
          os.chdir('gitian.sigs.drc')
          subprocess.check_call(['git', 'add', args.version+'-linux/'+args.signer])
          subprocess.check_call(['git', 'add', args.version+'-win-unsigned/'+args.signer])
          subprocess.check_call(['git', 'add', args.version+'-osx-unsigned/'+args.signer])
          subprocess.check_call(['git', 'commit', '-m', 'Add '+args.version+' unsigned sigs for '+args.signer])
          os.chdir(workdir)
  
  def sign():
      global args, workdir
      os.chdir('gitian-builder')
  
      if args.windows:
          print('\nSigning ' + args.version + ' Windows')
          subprocess.check_call(['bin/gbuild', '-i', '--commit', 'signature='+args.commit, '../doraecoin/contrib/gitian-descriptors/gitian-win-signer.yml'])
          subprocess.check_call(['bin/gsign', '-p', args.sign_prog, '--signer', args.signer, '--release', args.version+'-win-signed', '--destination', '../gitian.sigs.drc/', '../doraecoin/contrib/gitian-descriptors/gitian-win-signer.yml'])
          subprocess.check_call('mv build/out/doraecoin-*win64-setup.exe ../doraecoin-binaries/'+args.version, shell=True)
          subprocess.check_call('mv build/out/doraecoin-*win32-setup.exe ../doraecoin-binaries/'+args.version, shell=True)
  
      if args.macos:
          print('\nSigning ' + args.version + ' MacOS')
          subprocess.check_call(['bin/gbuild', '-i', '--commit', 'signature='+args.commit, '../doraecoin/contrib/gitian-descriptors/gitian-osx-signer.yml'])
          subprocess.check_call(['bin/gsign', '-p', args.sign_prog, '--signer', args.signer, '--release', args.version+'-osx-signed', '--destination', '../gitian.sigs.drc/', '../doraecoin/contrib/gitian-descriptors/gitian-osx-signer.yml'])
          subprocess.check_call('mv build/out/doraecoin-osx-signed.dmg ../doraecoin-binaries/'+args.version+'/doraecoin-'+args.version+'-osx.dmg', shell=True)
  
      os.chdir(workdir)
  
      if args.commit_files:
          print('\nCommitting '+args.version+' Signed Sigs\n')
          os.chdir('gitian.sigs.drc')
          subprocess.check_call(['git', 'add', args.version+'-win-signed/'+args.signer])
          subprocess.check_call(['git', 'add', args.version+'-osx-signed/'+args.signer])
          subprocess.check_call(['git', 'commit', '-a', '-m', 'Add '+args.version+' signed binary sigs for '+args.signer])
          os.chdir(workdir)
  
  def verify():
      global args, workdir
      os.chdir('gitian-builder')
  
      print('\nVerifying v'+args.version+' Linux\n')
      subprocess.check_call(['bin/gverify', '-v', '-d', '../gitian.sigs.drc/', '-r', args.version+'-linux', '../doraecoin/contrib/gitian-descriptors/gitian-linux.yml'])
      print('\nVerifying v'+args.version+' Windows\n')
      subprocess.check_call(['bin/gverify', '-v', '-d', '../gitian.sigs.drc/', '-r', args.version+'-win-unsigned', '../doraecoin/contrib/gitian-descriptors/gitian-win.yml'])
      print('\nVerifying v'+args.version+' MacOS\n')
      subprocess.check_call(['bin/gverify', '-v', '-d', '../gitian.sigs.drc/', '-r', args.version+'-osx-unsigned', '../doraecoin/contrib/gitian-descriptors/gitian-osx.yml'])
      print('\nVerifying v'+args.version+' Signed Windows\n')
      subprocess.check_call(['bin/gverify', '-v', '-d', '../gitian.sigs.drc/', '-r', args.version+'-win-signed', '../doraecoin/contrib/gitian-descriptors/gitian-win-signer.yml'])
      print('\nVerifying v'+args.version+' Signed MacOS\n')
      subprocess.check_call(['bin/gverify', '-v', '-d', '../gitian.sigs.drc/', '-r', args.version+'-osx-signed', '../doraecoin/contrib/gitian-descriptors/gitian-osx-signer.yml'])
  
      os.chdir(workdir)
  
  def main():
      global args, workdir
  
      parser = argparse.ArgumentParser(usage='%(prog)s [options] signer version')
      parser.add_argument('-c', '--commit', action='store_true', dest='commit', help='Indicate that the version argument is for a commit or branch')
      parser.add_argument('-u', '--url', dest='url', default='https://github.com/doraecoin-project/doraecoin', help='Specify the URL of the repository. Default is %(default)s')
      parser.add_argument('-v', '--verify', action='store_true', dest='verify', help='Verify the Gitian build')
      parser.add_argument('-b', '--build', action='store_true', dest='build', help='Do a Gitian build')
      parser.add_argument('-s', '--sign', action='store_true', dest='sign', help='Make signed binaries for Windows and MacOS')
      parser.add_argument('-B', '--buildsign', action='store_true', dest='buildsign', help='Build both signed and unsigned binaries')
      parser.add_argument('-o', '--os', dest='os', default='lwm', help='Specify which Operating Systems the build is for. Default is %(default)s. l for Linux, w for Windows, m for MacOS')
      parser.add_argument('-j', '--jobs', dest='jobs', default='2', help='Number of processes to use. Default %(default)s')
      parser.add_argument('-m', '--memory', dest='memory', default='2000', help='Memory to allocate in MiB. Default %(default)s')
      parser.add_argument('-k', '--kvm', action='store_true', dest='kvm', help='Use KVM instead of LXC')
      parser.add_argument('-d', '--docker', action='store_true', dest='docker', help='Use Docker instead of LXC')
      parser.add_argument('-S', '--setup', action='store_true', dest='setup', help='Set up the Gitian building environment. Uses LXC. If you want to use KVM, use the --kvm option. Only works on Debian-based systems (Ubuntu, Debian)')
      parser.add_argument('-D', '--detach-sign', action='store_true', dest='detach_sign', help='Create the assert file for detached signing. Will not commit anything.')
      parser.add_argument('-n', '--no-commit', action='store_false', dest='commit_files', help='Do not commit anything to git')
      parser.add_argument('signer', help='GPG signer to sign each build assert file')
      parser.add_argument('version', help='Version number, commit, or branch to build. If building a commit or branch, the -c option must be specified')
  
      args = parser.parse_args()
      workdir = os.getcwd()
  
      args.linux = 'l' in args.os
      args.windows = 'w' in args.os
      args.macos = 'm' in args.os
  
      args.is_bionic = b'bionic' in subprocess.check_output(['lsb_release', '-cs'])
  
      if args.buildsign:
          args.build=True
          args.sign=True
  
      if args.kvm and args.docker:
          raise Exception('Error: cannot have both kvm and docker')
  
      args.sign_prog = 'true' if args.detach_sign else 'gpg --detach-sign'
  
      # Set enviroment variable USE_LXC or USE_DOCKER, let gitian-builder know that we use lxc or docker
      if args.docker:
          os.environ['USE_DOCKER'] = '1'
      elif not args.kvm:
          os.environ['USE_LXC'] = '1'
          if not 'GITIAN_HOST_IP' in os.environ.keys():
              os.environ['GITIAN_HOST_IP'] = '10.0.3.1'
          if not 'LXC_GUEST_IP' in os.environ.keys():
              os.environ['LXC_GUEST_IP'] = '10.0.3.5'
  
      # Disable for MacOS if no SDK found
      if args.macos and not os.path.isfile('gitian-builder/inputs/MacOSX10.11.sdk.tar.gz'):
          print('Cannot build for MacOS, SDK does not exist. Will build for other OSes')
          args.macos = False
  
      script_name = os.path.basename(sys.argv[0])
      # Signer and version shouldn't be empty
      if args.signer == '':
          print(script_name+': Missing signer.')
          print('Try '+script_name+' --help for more information')
          exit(1)
      if args.version == '':
          print(script_name+': Missing version.')
          print('Try '+script_name+' --help for more information')
          exit(1)
  
      # Add leading 'v' for tags
      args.commit = ('' if args.commit else 'v') + args.version
      print(args.commit)
  
      if args.setup:
          setup()
  
      os.chdir('doraecoin')
      subprocess.check_call(['git', 'fetch'])
      subprocess.check_call(['git', 'checkout', args.commit])
      os.chdir(workdir)
  
      if args.build:
          build()
  
      if args.sign:
          sign()
  
      if args.verify:
          verify()
  
  if __name__ == '__main__':
      main()
  